1 /* This file is part of SIS (SPARC instruction simulator)
2
3 Copyright (C) 1995-2024 Free Software Foundation, Inc.
4 Contributed by Jiri Gaisler, European Space Agency
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
18
19 /* This must come before any other includes. */
20 #include "defs.h"
21
22 #include <signal.h>
23 #include <string.h>
24 #include <stdio.h>
25 #include <stdlib.h>
26 #include <ctype.h>
27 #include "sis.h"
28 #include <dis-asm.h>
29 #include "sim-config.h"
30 #include <inttypes.h>
31 #include <sys/time.h>
32
33 #define VAL(x) strtoul(x,(char **)NULL,0)
34
35 struct disassemble_info dinfo;
36 struct pstate sregs;
37 extern struct estate ebase;
38 int ctrl_c = 0;
39 int sis_verbose = 0;
40 char *sis_version = "2.7.5";
41 int nfp = 0;
42 int ift = 0;
43 int wrp = 0;
44 int rom8 = 0;
45 int uben = 0;
46 int termsave;
47 int sparclite = 0; /* emulating SPARClite instructions? */
48 int sparclite_board = 0; /* emulating SPARClite board RAM? */
49 char uart_dev1[128] = "";
50 char uart_dev2[128] = "";
51 extern int ext_irl;
52 uint32_t last_load_addr = 0;
53
54 #ifdef ERRINJ
55 uint32_t errcnt = 0;
56 uint32_t errper = 0;
57 uint32_t errtt = 0;
58 uint32_t errftt = 0;
59 uint32_t errmec = 0;
60 #endif
61
62 /* Forward declarations */
63
64 static int batch (struct pstate *sregs, char *fname);
65 static void set_rega (struct pstate *sregs, char *reg, uint32_t rval);
66 static void disp_reg (struct pstate *sregs, char *reg);
67 static uint32_t limcalc (float32 freq);
68 static void int_handler (int32_t sig);
69 static void init_event (void);
70 static int disp_fpu (struct pstate *sregs);
71 static void disp_regs (struct pstate *sregs, int cwp);
72 static void disp_ctrl (struct pstate *sregs);
73 static void disp_mem (uint32_t addr, uint32_t len);
74
75 static int
batch(struct pstate * sregs,char * fname)76 batch(struct pstate *sregs, char *fname)
77 {
78 FILE *fp;
79 char *lbuf = NULL;
80 size_t len = 0;
81 size_t slen;
82
83 if ((fp = fopen(fname, "r")) == NULL) {
84 fprintf(stderr, "couldn't open batch file %s\n", fname);
85 return 0;
86 }
87 while (getline(&lbuf, &len, fp) > -1) {
88 slen = strlen(lbuf);
89 if (slen && (lbuf[slen - 1] == '\n')) {
90 lbuf[slen - 1] = 0;
91 printf("sis> %s\n", lbuf);
92 exec_cmd(sregs, lbuf);
93 }
94 }
95 free(lbuf);
96 fclose(fp);
97 return 1;
98 }
99
100 void
set_regi(struct pstate * sregs,int32_t reg,uint32_t rval)101 set_regi(struct pstate *sregs, int32_t reg, uint32_t rval)
102 {
103 uint32_t cwp;
104
105 cwp = ((sregs->psr & 0x7) << 4);
106 if ((reg > 0) && (reg < 8)) {
107 sregs->g[reg] = rval;
108 } else if ((reg >= 8) && (reg < 32)) {
109 sregs->r[(cwp + reg) & 0x7f] = rval;
110 } else if ((reg >= 32) && (reg < 64)) {
111 sregs->fsi[reg - 32] = rval;
112 } else {
113 switch (reg) {
114 case 64:
115 sregs->y = rval;
116 break;
117 case 65:
118 sregs->psr = rval;
119 break;
120 case 66:
121 sregs->wim = rval;
122 break;
123 case 67:
124 sregs->tbr = rval;
125 break;
126 case 68:
127 sregs->pc = rval;
128 break;
129 case 69:
130 sregs->npc = rval;
131 break;
132 case 70:
133 sregs->fsr = rval;
134 set_fsr(rval);
135 break;
136 default:break;
137 }
138 }
139 }
140
141 void
get_regi(struct pstate * sregs,int32_t reg,unsigned char * buf)142 get_regi(struct pstate * sregs, int32_t reg, unsigned char *buf)
143 {
144 uint32_t cwp;
145 uint32_t rval = 0;
146
147 cwp = ((sregs->psr & 0x7) << 4);
148 if ((reg >= 0) && (reg < 8)) {
149 rval = sregs->g[reg];
150 } else if ((reg >= 8) && (reg < 32)) {
151 rval = sregs->r[(cwp + reg) & 0x7f];
152 } else if ((reg >= 32) && (reg < 64)) {
153 rval = sregs->fsi[reg - 32];
154 } else {
155 switch (reg) {
156 case 64:
157 rval = sregs->y;
158 break;
159 case 65:
160 rval = sregs->psr;
161 break;
162 case 66:
163 rval = sregs->wim;
164 break;
165 case 67:
166 rval = sregs->tbr;
167 break;
168 case 68:
169 rval = sregs->pc;
170 break;
171 case 69:
172 rval = sregs->npc;
173 break;
174 case 70:
175 rval = sregs->fsr;
176 break;
177 default:break;
178 }
179 }
180 buf[0] = (rval >> 24) & 0x0ff;
181 buf[1] = (rval >> 16) & 0x0ff;
182 buf[2] = (rval >> 8) & 0x0ff;
183 buf[3] = rval & 0x0ff;
184 }
185
186
187 static void
set_rega(struct pstate * sregs,char * reg,uint32_t rval)188 set_rega(struct pstate *sregs, char *reg, uint32_t rval)
189 {
190 uint32_t cwp;
191 int32_t err = 0;
192
193 cwp = ((sregs->psr & 0x7) << 4);
194 if (strcmp(reg, "psr") == 0)
195 sregs->psr = (rval = (rval & 0x00f03fff));
196 else if (strcmp(reg, "tbr") == 0)
197 sregs->tbr = (rval = (rval & 0xfffffff0));
198 else if (strcmp(reg, "wim") == 0)
199 sregs->wim = (rval = (rval & 0x0ff));
200 else if (strcmp(reg, "y") == 0)
201 sregs->y = rval;
202 else if (strcmp(reg, "pc") == 0)
203 sregs->pc = rval;
204 else if (strcmp(reg, "npc") == 0)
205 sregs->npc = rval;
206 else if (strcmp(reg, "fsr") == 0) {
207 sregs->fsr = rval;
208 set_fsr(rval);
209 } else if (strcmp(reg, "g0") == 0)
210 err = 2;
211 else if (strcmp(reg, "g1") == 0)
212 sregs->g[1] = rval;
213 else if (strcmp(reg, "g2") == 0)
214 sregs->g[2] = rval;
215 else if (strcmp(reg, "g3") == 0)
216 sregs->g[3] = rval;
217 else if (strcmp(reg, "g4") == 0)
218 sregs->g[4] = rval;
219 else if (strcmp(reg, "g5") == 0)
220 sregs->g[5] = rval;
221 else if (strcmp(reg, "g6") == 0)
222 sregs->g[6] = rval;
223 else if (strcmp(reg, "g7") == 0)
224 sregs->g[7] = rval;
225 else if (strcmp(reg, "o0") == 0)
226 sregs->r[(cwp + 8) & 0x7f] = rval;
227 else if (strcmp(reg, "o1") == 0)
228 sregs->r[(cwp + 9) & 0x7f] = rval;
229 else if (strcmp(reg, "o2") == 0)
230 sregs->r[(cwp + 10) & 0x7f] = rval;
231 else if (strcmp(reg, "o3") == 0)
232 sregs->r[(cwp + 11) & 0x7f] = rval;
233 else if (strcmp(reg, "o4") == 0)
234 sregs->r[(cwp + 12) & 0x7f] = rval;
235 else if (strcmp(reg, "o5") == 0)
236 sregs->r[(cwp + 13) & 0x7f] = rval;
237 else if (strcmp(reg, "o6") == 0)
238 sregs->r[(cwp + 14) & 0x7f] = rval;
239 else if (strcmp(reg, "o7") == 0)
240 sregs->r[(cwp + 15) & 0x7f] = rval;
241 else if (strcmp(reg, "l0") == 0)
242 sregs->r[(cwp + 16) & 0x7f] = rval;
243 else if (strcmp(reg, "l1") == 0)
244 sregs->r[(cwp + 17) & 0x7f] = rval;
245 else if (strcmp(reg, "l2") == 0)
246 sregs->r[(cwp + 18) & 0x7f] = rval;
247 else if (strcmp(reg, "l3") == 0)
248 sregs->r[(cwp + 19) & 0x7f] = rval;
249 else if (strcmp(reg, "l4") == 0)
250 sregs->r[(cwp + 20) & 0x7f] = rval;
251 else if (strcmp(reg, "l5") == 0)
252 sregs->r[(cwp + 21) & 0x7f] = rval;
253 else if (strcmp(reg, "l6") == 0)
254 sregs->r[(cwp + 22) & 0x7f] = rval;
255 else if (strcmp(reg, "l7") == 0)
256 sregs->r[(cwp + 23) & 0x7f] = rval;
257 else if (strcmp(reg, "i0") == 0)
258 sregs->r[(cwp + 24) & 0x7f] = rval;
259 else if (strcmp(reg, "i1") == 0)
260 sregs->r[(cwp + 25) & 0x7f] = rval;
261 else if (strcmp(reg, "i2") == 0)
262 sregs->r[(cwp + 26) & 0x7f] = rval;
263 else if (strcmp(reg, "i3") == 0)
264 sregs->r[(cwp + 27) & 0x7f] = rval;
265 else if (strcmp(reg, "i4") == 0)
266 sregs->r[(cwp + 28) & 0x7f] = rval;
267 else if (strcmp(reg, "i5") == 0)
268 sregs->r[(cwp + 29) & 0x7f] = rval;
269 else if (strcmp(reg, "i6") == 0)
270 sregs->r[(cwp + 30) & 0x7f] = rval;
271 else if (strcmp(reg, "i7") == 0)
272 sregs->r[(cwp + 31) & 0x7f] = rval;
273 else
274 err = 1;
275 switch (err) {
276 case 0:
277 printf("%s = %d (0x%08x)\n", reg, rval, rval);
278 break;
279 case 1:
280 printf("no such regiser: %s\n", reg);
281 break;
282 case 2:
283 printf("cannot set g0\n");
284 break;
285 default:
286 break;
287 }
288
289 }
290
291 static void
disp_reg(struct pstate * sregs,char * reg)292 disp_reg(struct pstate *sregs, char *reg)
293 {
294 if (strncmp(reg, "w",1) == 0)
295 disp_regs(sregs, VAL(®[1]));
296 }
297
298 #ifdef ERRINJ
299
300 void
errinj(int32_t arg ATTRIBUTE_UNUSED)301 errinj (int32_t arg ATTRIBUTE_UNUSED)
302 {
303 int err;
304
305 switch (err = (random() % 12)) {
306 case 0: errtt = 0x61; break;
307 case 1: errtt = 0x62; break;
308 case 2: errtt = 0x63; break;
309 case 3: errtt = 0x64; break;
310 case 4: errtt = 0x65; break;
311 case 5:
312 case 6:
313 case 7: errftt = err;
314 break;
315 case 8: errmec = 1; break;
316 case 9: errmec = 2; break;
317 case 10: errmec = 5; break;
318 case 11: errmec = 6; break;
319 }
320 errcnt++;
321 if (errper) event(errinj, 0, (random()%errper));
322 }
323
324 void
errinjstart(void)325 errinjstart (void)
326 {
327 if (errper) event(errinj, 0, (random()%errper));
328 }
329
330 #endif
331
332 static uint32_t
limcalc(float32 freq)333 limcalc (float32 freq)
334 {
335 uint32_t unit, lim;
336 double flim;
337 char *cmd1, *cmd2;
338
339 unit = 1;
340 lim = -1;
341 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
342 lim = VAL(cmd1);
343 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
344 if (strcmp(cmd2,"us")==0) unit = 1;
345 if (strcmp(cmd2,"ms")==0) unit = 1000;
346 if (strcmp(cmd2,"s")==0) unit = 1000000;
347 }
348 flim = (double) lim * (double) unit * (double) freq +
349 (double) ebase.simtime;
350 if ((flim > ebase.simtime) && (flim < 4294967296.0)) {
351 lim = (uint32_t) flim;
352 } else {
353 printf("error in expression\n");
354 lim = -1;
355 }
356 }
357 return lim;
358 }
359
360 int
exec_cmd(struct pstate * sregs,const char * cmd)361 exec_cmd(struct pstate *sregs, const char *cmd)
362 {
363 char *cmd1, *cmd2;
364 int32_t stat;
365 uint32_t len, i, clen, j;
366 static uint32_t daddr = 0;
367 char *cmdsave, *cmdsave2 = NULL;
368
369 stat = OK;
370 cmdsave = strdup(cmd);
371 cmdsave2 = strdup (cmd);
372 if ((cmd1 = strtok (cmdsave2, " \t")) != NULL) {
373 clen = strlen(cmd1);
374 if (strncmp(cmd1, "bp", clen) == 0) {
375 for (i = 0; i < sregs->bptnum; i++) {
376 printf(" %d : 0x%08x\n", i + 1, sregs->bpts[i]);
377 }
378 } else if (strncmp(cmd1, "+bp", clen) == 0) {
379 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
380 sregs->bpts[sregs->bptnum] = VAL(cmd1) & ~0x3;
381 printf("added breakpoint %d at 0x%08x\n",
382 sregs->bptnum + 1, sregs->bpts[sregs->bptnum]);
383 sregs->bptnum += 1;
384 }
385 } else if (strncmp(cmd1, "-bp", clen) == 0) {
386 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
387 i = VAL(cmd1) - 1;
388 if ((i >= 0) && (i < sregs->bptnum)) {
389 printf("deleted breakpoint %d at 0x%08x\n", i + 1,
390 sregs->bpts[i]);
391 for (; i < sregs->bptnum - 1; i++) {
392 sregs->bpts[i] = sregs->bpts[i + 1];
393 }
394 sregs->bptnum -= 1;
395 }
396 }
397 } else if (strncmp(cmd1, "batch", clen) == 0) {
398 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
399 printf("no file specified\n");
400 } else {
401 batch(sregs, cmd1);
402 }
403 } else if (strncmp(cmd1, "cont", clen) == 0) {
404 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
405 stat = run_sim(sregs, UINT64_MAX, 0);
406 } else {
407 stat = run_sim(sregs, VAL(cmd1), 0);
408 }
409 daddr = sregs->pc;
410 sim_halt();
411 } else if (strncmp(cmd1, "debug", clen) == 0) {
412 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
413 sis_verbose = VAL(cmd1);
414 }
415 printf("Debug level = %d\n",sis_verbose);
416 } else if (strncmp(cmd1, "dis", clen) == 0) {
417 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
418 daddr = VAL(cmd1);
419 }
420 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
421 len = VAL(cmd2);
422 } else
423 len = 16;
424 printf("\n");
425 dis_mem(daddr, len, &dinfo);
426 printf("\n");
427 daddr += len * 4;
428 } else if (strncmp(cmd1, "echo", clen) == 0) {
429 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
430 printf("%s\n", (&cmdsave[clen+1]));
431 }
432 #ifdef ERRINJ
433 } else if (strncmp(cmd1, "error", clen) == 0) {
434 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
435 errper = VAL(cmd1);
436 if (errper) {
437 event(errinj, 0, (len = (random()%errper)));
438 printf("Error injection started with period %d\n",len);
439 }
440 } else printf("Injected errors: %d\n",errcnt);
441 #endif
442 } else if (strncmp(cmd1, "float", clen) == 0) {
443 stat = disp_fpu(sregs);
444 } else if (strncmp(cmd1, "go", clen) == 0) {
445 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
446 len = last_load_addr;
447 } else {
448 len = VAL(cmd1);
449 }
450 sregs->pc = len & ~3;
451 sregs->npc = sregs->pc + 4;
452 if ((sregs->pc != 0) && (ebase.simtime == 0))
453 boot_init();
454 printf("resuming at 0x%08x\n",sregs->pc);
455 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL) {
456 stat = run_sim(sregs, VAL(cmd2), 0);
457 } else {
458 stat = run_sim(sregs, UINT64_MAX, 0);
459 }
460 daddr = sregs->pc;
461 sim_halt();
462 } else if (strncmp(cmd1, "help", clen) == 0) {
463 gen_help();
464 } else if (strncmp(cmd1, "history", clen) == 0) {
465 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
466 sregs->histlen = VAL(cmd1);
467 if (sregs->histbuf != NULL)
468 free(sregs->histbuf);
469 sregs->histbuf = (struct histype *) calloc(sregs->histlen, sizeof(struct histype));
470 printf("trace history length = %d\n\r", sregs->histlen);
471 sregs->histind = 0;
472
473 } else {
474 j = sregs->histind;
475 for (i = 0; i < sregs->histlen; i++) {
476 if (j >= sregs->histlen)
477 j = 0;
478 printf(" %8d ", sregs->histbuf[j].time);
479 dis_mem(sregs->histbuf[j].addr, 1, &dinfo);
480 j++;
481 }
482 }
483
484 } else if (strncmp(cmd1, "load", clen) == 0) {
485 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
486 last_load_addr = bfd_load(cmd1);
487 while ((cmd1 = strtok(NULL, " \t\n\r")) != NULL)
488 last_load_addr = bfd_load(cmd1);
489 } else {
490 printf("load: no file specified\n");
491 }
492 } else if (strncmp(cmd1, "mem", clen) == 0) {
493 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL)
494 daddr = VAL(cmd1);
495 if ((cmd2 = strtok(NULL, " \t\n\r")) != NULL)
496 len = VAL(cmd2);
497 else
498 len = 64;
499 disp_mem(daddr, len);
500 daddr += len;
501 } else if (strncmp(cmd1, "perf", clen) == 0) {
502 cmd1 = strtok(NULL, " \t\n\r");
503 if ((cmd1 != NULL) &&
504 (strncmp(cmd1, "reset", strlen(cmd1)) == 0)) {
505 reset_stat(sregs);
506 } else
507 show_stat(sregs);
508 } else if (strncmp(cmd1, "quit", clen) == 0) {
509 exit(0);
510 } else if (strncmp(cmd1, "reg", clen) == 0) {
511 cmd1 = strtok(NULL, " \t\n\r");
512 cmd2 = strtok(NULL, " \t\n\r");
513 if (cmd2 != NULL)
514 set_rega(sregs, cmd1, VAL(cmd2));
515 else if (cmd1 != NULL)
516 disp_reg(sregs, cmd1);
517 else {
518 disp_regs(sregs,sregs->psr);
519 disp_ctrl(sregs);
520 }
521 } else if (strncmp(cmd1, "reset", clen) == 0) {
522 ebase.simtime = 0;
523 reset_all();
524 reset_stat(sregs);
525 } else if (strncmp(cmd1, "run", clen) == 0) {
526 ebase.simtime = 0;
527 reset_all();
528 reset_stat(sregs);
529 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
530 stat = run_sim(sregs, UINT64_MAX, 0);
531 } else {
532 stat = run_sim(sregs, VAL(cmd1), 0);
533 }
534 daddr = sregs->pc;
535 sim_halt();
536 } else if (strncmp(cmd1, "shell", clen) == 0) {
537 if ((cmd1 = strtok(NULL, " \t\n\r")) != NULL) {
538 if (system(&cmdsave[clen])) {
539 /* Silence unused return value warning. */
540 }
541 }
542 } else if (strncmp(cmd1, "step", clen) == 0) {
543 stat = run_sim(sregs, 1, 1);
544 daddr = sregs->pc;
545 sim_halt();
546 } else if (strncmp(cmd1, "tcont", clen) == 0) {
547 sregs->tlimit = limcalc(sregs->freq);
548 stat = run_sim(sregs, UINT64_MAX, 0);
549 daddr = sregs->pc;
550 sim_halt();
551 } else if (strncmp(cmd1, "tgo", clen) == 0) {
552 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
553 len = last_load_addr;
554 } else {
555 len = VAL(cmd1);
556 sregs->tlimit = limcalc(sregs->freq);
557 }
558 sregs->pc = len & ~3;
559 sregs->npc = sregs->pc + 4;
560 printf("resuming at 0x%08x\n",sregs->pc);
561 stat = run_sim(sregs, UINT64_MAX, 0);
562 daddr = sregs->pc;
563 sim_halt();
564 } else if (strncmp(cmd1, "tlimit", clen) == 0) {
565 sregs->tlimit = limcalc(sregs->freq);
566 if (sregs->tlimit != (uint32_t) -1)
567 printf("simulation limit = %u (%.3f ms)\n",(uint32_t) sregs->tlimit,
568 sregs->tlimit / sregs->freq / 1000);
569 } else if (strncmp(cmd1, "tra", clen) == 0) {
570 if ((cmd1 = strtok(NULL, " \t\n\r")) == NULL) {
571 stat = run_sim(sregs, UINT64_MAX, 1);
572 } else {
573 stat = run_sim(sregs, VAL(cmd1), 1);
574 }
575 printf("\n");
576 daddr = sregs->pc;
577 sim_halt();
578 } else if (strncmp(cmd1, "trun", clen) == 0) {
579 ebase.simtime = 0;
580 reset_all();
581 reset_stat(sregs);
582 sregs->tlimit = limcalc(sregs->freq);
583 stat = run_sim(sregs, UINT64_MAX, 0);
584 daddr = sregs->pc;
585 sim_halt();
586 } else
587 printf("syntax error\n");
588 }
589 if (cmdsave2 != NULL)
590 free(cmdsave2);
591 if (cmdsave != NULL)
592 free(cmdsave);
593 return stat;
594 }
595
596
597 void
reset_stat(struct pstate * sregs)598 reset_stat(struct pstate *sregs)
599 {
600 sregs->tottime = 0.0;
601 sregs->pwdtime = 0;
602 sregs->ninst = 0;
603 sregs->fholdt = 0;
604 sregs->holdt = 0;
605 sregs->icntt = 0;
606 sregs->finst = 0;
607 sregs->nstore = 0;
608 sregs->nload = 0;
609 sregs->nbranch = 0;
610 sregs->simstart = ebase.simtime;
611
612 }
613
614 void
show_stat(struct pstate * sregs)615 show_stat(struct pstate *sregs)
616 {
617 #ifdef STAT
618 uint32_t iinst;
619 #endif
620 uint32_t stime;
621
622 if (sregs->tottime == 0.0)
623 sregs->tottime += 1E-6;
624 stime = ebase.simtime - sregs->simstart; /* Total simulated time */
625 #ifdef STAT
626
627 iinst = sregs->ninst - sregs->finst - sregs->nload - sregs->nstore -
628 sregs->nbranch;
629 #endif
630
631 printf("\n Cycles : %9" PRIu64 "\n\r", ebase.simtime - sregs->simstart);
632 printf(" Instructions : %9" PRIu64 "\n", sregs->ninst);
633
634 #ifdef STAT
635 printf(" integer : %9.2f %%\n", 100.0 * (float) iinst / (float) sregs->ninst);
636 printf(" load : %9.2f %%\n",
637 100.0 * (float) sregs->nload / (float) sregs->ninst);
638 printf(" store : %9.2f %%\n",
639 100.0 * (float) sregs->nstore / (float) sregs->ninst);
640 printf(" branch : %9.2f %%\n",
641 100.0 * (float) sregs->nbranch / (float) sregs->ninst);
642 printf(" float : %9.2f %%\n",
643 100.0 * (float) sregs->finst / (float) sregs->ninst);
644 printf(" Integer CPI : %9.2f\n",
645 ((float) (stime - sregs->pwdtime - sregs->fholdt - sregs->finst))
646 /
647 (float) (sregs->ninst - sregs->finst));
648 printf(" Float CPI : %9.2f\n",
649 ((float) sregs->fholdt / (float) sregs->finst) + 1.0);
650 #endif
651 printf(" Overall CPI : %9.2f\n",
652 (float) (stime - sregs->pwdtime) / (float) sregs->ninst);
653 printf("\n ERC32 performance (%4.1f MHz): %5.2f MOPS (%5.2f MIPS, %5.2f MFLOPS)\n",
654 sregs->freq, sregs->freq * (float) sregs->ninst / (float) (stime - sregs->pwdtime),
655 sregs->freq * (float) (sregs->ninst - sregs->finst) /
656 (float) (stime - sregs->pwdtime),
657 sregs->freq * (float) sregs->finst / (float) (stime - sregs->pwdtime));
658 printf(" Simulated ERC32 time : %.2f s\n",
659 (float) (ebase.simtime - sregs->simstart) / 1000000.0 / sregs->freq);
660 printf(" Processor utilisation : %.2f %%\n",
661 100.0 * (1.0 - ((float) sregs->pwdtime / (float) stime)));
662 printf(" Real-time performance : %.2f %%\n",
663 100.0 / (sregs->tottime / ((double) (stime) / (sregs->freq * 1.0E6))));
664 printf(" Simulator performance : %.2f MIPS\n",
665 (double)(sregs->ninst) / sregs->tottime / 1E6);
666 printf(" Used time (sys + user) : %.2f s\n\n", sregs->tottime);
667 }
668
669
670
671 void
init_bpt(struct pstate * sregs)672 init_bpt(struct pstate *sregs)
673 {
674 sregs->bptnum = 0;
675 sregs->histlen = 0;
676 sregs->histind = 0;
677 sregs->histbuf = NULL;
678 sregs->tlimit = -1;
679 }
680
681 static void
int_handler(int32_t sig)682 int_handler(int32_t sig)
683 {
684 if (sig != 2)
685 printf("\n\n Signal handler error (%d)\n\n", sig);
686 ctrl_c = 1;
687 }
688
689 void
init_signals(void)690 init_signals(void)
691 {
692 signal(SIGTERM, int_handler);
693 signal(SIGINT, int_handler);
694 }
695
696
697 extern struct disassemble_info dinfo;
698
699 struct estate ebase;
700 struct evcell evbuf[MAX_EVENTS];
701 struct irqcell irqarr[16];
702
703 static int
disp_fpu(struct pstate * sregs)704 disp_fpu(struct pstate *sregs)
705 {
706
707 int i;
708
709 printf("\n fsr: %08X\n\n", sregs->fsr);
710
711 #ifdef HOST_LITTLE_ENDIAN
712 for (i = 0; i < 32; i++)
713 sregs->fdp[i ^ 1] = sregs->fs[i];
714 #endif
715
716 for (i = 0; i < 32; i++) {
717 printf(" f%02d %08x %14e ", i, sregs->fsi[i], sregs->fs[i]);
718 if (!(i & 1))
719 printf("%14e\n", sregs->fd[i >> 1]);
720 else
721 printf("\n");
722 }
723 printf("\n");
724 return OK;
725 }
726
727 static void
disp_regs(struct pstate * sregs,int cwp)728 disp_regs(struct pstate *sregs, int cwp)
729 {
730
731 int i;
732
733 cwp = ((cwp & 0x7) << 4);
734 printf("\n\t INS LOCALS OUTS GLOBALS\n");
735 for (i = 0; i < 8; i++) {
736 printf(" %d: %08X %08X %08X %08X\n", i,
737 sregs->r[(cwp + i + 24) & 0x7f],
738 sregs->r[(cwp + i + 16) & 0x7f], sregs->r[(cwp + i + 8) & 0x7f],
739 sregs->g[i]);
740 }
741 }
742
print_insn_sparc_sis(uint32_t addr,struct disassemble_info * info)743 static void print_insn_sparc_sis(uint32_t addr, struct disassemble_info *info)
744 {
745 unsigned char i[4];
746
747 sis_memory_read(addr, i, 4);
748 dinfo.buffer_vma = addr;
749 dinfo.buffer_length = 4;
750 dinfo.buffer = i;
751 print_insn_sparc(addr, info);
752 }
753
754 static void
disp_ctrl(struct pstate * sregs)755 disp_ctrl(struct pstate *sregs)
756 {
757
758 uint32_t i;
759
760 printf("\n psr: %08X wim: %08X tbr: %08X y: %08X\n",
761 sregs->psr, sregs->wim, sregs->tbr, sregs->y);
762 sis_memory_read (sregs->pc, (char *) &i, 4);
763 printf ("\n pc: %08X = %08X ", sregs->pc, i);
764 print_insn_sparc_sis(sregs->pc, &dinfo);
765 sis_memory_read (sregs->npc, (char *) &i, 4);
766 printf ("\n npc: %08X = %08X ", sregs->npc, i);
767 print_insn_sparc_sis(sregs->npc, &dinfo);
768 if (sregs->err_mode)
769 printf("\n IU in error mode");
770 printf("\n\n");
771 }
772
773 static void
disp_mem(uint32_t addr,uint32_t len)774 disp_mem(uint32_t addr, uint32_t len)
775 {
776
777 uint32_t i;
778 union {
779 unsigned char u8[4];
780 uint32_t u32;
781 } data;
782 uint32_t mem[4], j;
783 char *p;
784
785 for (i = addr & ~3; i < ((addr + len) & ~3); i += 16) {
786 printf("\n %8X ", i);
787 for (j = 0; j < 4; j++) {
788 sis_memory_read ((i + (j * 4)), data.u8, 4);
789 printf ("%08x ", data.u32);
790 mem[j] = data.u32;
791 }
792 printf(" ");
793 p = (char *) mem;
794 for (j = 0; j < 16; j++) {
795 if (isprint (p[j ^ EBT]))
796 putchar (p[j ^ EBT]);
797 else
798 putchar('.');
799 }
800 }
801 printf("\n\n");
802 }
803
804 void
dis_mem(uint32_t addr,uint32_t len,struct disassemble_info * info)805 dis_mem(uint32_t addr, uint32_t len, struct disassemble_info *info)
806 {
807 uint32_t i;
808 union {
809 unsigned char u8[4];
810 uint32_t u32;
811 } data;
812
813 for (i = addr & -3; i < ((addr & -3) + (len << 2)); i += 4) {
814 sis_memory_read (i, data.u8, 4);
815 printf (" %08x %08x ", i, data.u32);
816 print_insn_sparc_sis(i, info);
817 if (i >= 0xfffffffc) break;
818 printf("\n");
819 }
820 }
821
822 /* Add event to event queue */
823
824 void
event(void (* cfunc)(int32_t),int32_t arg,uint64_t delta)825 event(void (*cfunc) (int32_t), int32_t arg, uint64_t delta)
826 {
827 struct evcell *ev1, *evins;
828
829 if (ebase.freeq == NULL) {
830 printf("Error, too many events in event queue\n");
831 return;
832 }
833 ev1 = &ebase.eq;
834 delta += ebase.simtime;
835 while ((ev1->nxt != NULL) && (ev1->nxt->time <= delta)) {
836 ev1 = ev1->nxt;
837 }
838 if (ev1->nxt == NULL) {
839 ev1->nxt = ebase.freeq;
840 ebase.freeq = ebase.freeq->nxt;
841 ev1->nxt->nxt = NULL;
842 } else {
843 evins = ebase.freeq;
844 ebase.freeq = ebase.freeq->nxt;
845 evins->nxt = ev1->nxt;
846 ev1->nxt = evins;
847 }
848 ev1->nxt->time = delta;
849 ev1->nxt->cfunc = cfunc;
850 ev1->nxt->arg = arg;
851 }
852
853 #if 0 /* apparently not used */
854 void
855 stop_event(void)
856 {
857 }
858 #endif
859
860 void
init_event(void)861 init_event(void)
862 {
863 int32_t i;
864
865 ebase.eq.nxt = NULL;
866 ebase.freeq = evbuf;
867 for (i = 0; i < MAX_EVENTS; i++) {
868 evbuf[i].nxt = &evbuf[i + 1];
869 }
870 evbuf[MAX_EVENTS - 1].nxt = NULL;
871 }
872
873 void
set_int(int32_t level,void (* callback)(int32_t),int32_t arg)874 set_int(int32_t level, void (*callback) (int32_t), int32_t arg)
875 {
876 irqarr[level & 0x0f].callback = callback;
877 irqarr[level & 0x0f].arg = arg;
878 }
879
880 /* Advance simulator time */
881
882 void
advance_time(struct pstate * sregs)883 advance_time(struct pstate *sregs)
884 {
885
886 struct evcell *evrem;
887 void (*cfunc) (int32_t);
888 int32_t arg;
889 uint64_t endtime;
890
891 #ifdef STAT
892 sregs->fholdt += sregs->fhold;
893 sregs->holdt += sregs->hold;
894 sregs->icntt += sregs->icnt;
895 #endif
896
897 endtime = ebase.simtime + sregs->icnt + sregs->hold + sregs->fhold;
898
899 while ((ebase.eq.nxt->time <= (endtime)) && (ebase.eq.nxt != NULL)) {
900 ebase.simtime = ebase.eq.nxt->time;
901 cfunc = ebase.eq.nxt->cfunc;
902 arg = ebase.eq.nxt->arg;
903 evrem = ebase.eq.nxt;
904 ebase.eq.nxt = ebase.eq.nxt->nxt;
905 evrem->nxt = ebase.freeq;
906 ebase.freeq = evrem;
907 cfunc(arg);
908 }
909 ebase.simtime = endtime;
910
911 }
912
913 uint32_t
now(void)914 now(void)
915 {
916 return ebase.simtime;
917 }
918
919
920 /* Advance time until an external interrupt is seen */
921
922 int
wait_for_irq(void)923 wait_for_irq(void)
924 {
925 struct evcell *evrem;
926 void (*cfunc) (int32_t);
927 int32_t arg;
928 uint64_t endtime;
929
930 if (ebase.eq.nxt == NULL)
931 printf("Warning: event queue empty - power-down mode not entered\n");
932 endtime = ebase.simtime;
933 while (!ext_irl && (ebase.eq.nxt != NULL)) {
934 ebase.simtime = ebase.eq.nxt->time;
935 cfunc = ebase.eq.nxt->cfunc;
936 arg = ebase.eq.nxt->arg;
937 evrem = ebase.eq.nxt;
938 ebase.eq.nxt = ebase.eq.nxt->nxt;
939 evrem->nxt = ebase.freeq;
940 ebase.freeq = evrem;
941 cfunc(arg);
942 if (ctrl_c) {
943 printf("\bwarning: power-down mode interrupted\n");
944 break;
945 }
946 }
947 sregs.pwdtime += ebase.simtime - endtime;
948 return ebase.simtime - endtime;
949 }
950
951 int
check_bpt(struct pstate * sregs)952 check_bpt(struct pstate *sregs)
953 {
954 int32_t i;
955
956 if ((sregs->bphit) || (sregs->annul))
957 return 0;
958 for (i = 0; i < (int32_t) sregs->bptnum; i++) {
959 if (sregs->pc == sregs->bpts[i])
960 return BPT_HIT;
961 }
962 return 0;
963 }
964
965 void
reset_all(void)966 reset_all(void)
967 {
968 init_event(); /* Clear event queue */
969 init_regs(&sregs);
970 reset();
971 #ifdef ERRINJ
972 errinjstart();
973 #endif
974 }
975
976 void
sys_reset(void)977 sys_reset(void)
978 {
979 reset_all();
980 sregs.trap = 256; /* Force fake reset trap */
981 }
982
983 void
sys_halt(void)984 sys_halt(void)
985 {
986 sregs.trap = 257; /* Force fake halt trap */
987 }
988
989 #include "ansidecl.h"
990
991 #include <stdarg.h>
992
993 #include "libiberty.h"
994 #include "bfd.h"
995
996 #ifndef min
997 #define min(A, B) (((A) < (B)) ? (A) : (B))
998 #endif
999 #define LOAD_ADDRESS 0
1000
1001 int
bfd_load(const char * fname)1002 bfd_load (const char *fname)
1003 {
1004 asection *section;
1005 bfd *pbfd;
1006 int i;
1007
1008 pbfd = bfd_openr(fname, 0);
1009
1010 if (pbfd == NULL) {
1011 printf("open of %s failed\n", fname);
1012 return -1;
1013 }
1014 if (!bfd_check_format(pbfd, bfd_object)) {
1015 printf("file %s doesn't seem to be an object file\n", fname);
1016 return -1;
1017 }
1018
1019 if (sis_verbose)
1020 printf("loading %s:", fname);
1021 for (section = pbfd->sections; section; section = section->next) {
1022 if (bfd_section_flags (section) & SEC_ALLOC) {
1023 bfd_vma section_address;
1024 unsigned long section_size;
1025 const char *section_name;
1026
1027 section_name = bfd_section_name (section);
1028
1029 section_address = bfd_section_vma (section);
1030 /*
1031 * Adjust sections from a.out files, since they don't carry their
1032 * addresses with.
1033 */
1034 if (bfd_get_flavour(pbfd) == bfd_target_aout_flavour) {
1035 if (strcmp (section_name, ".text") == 0)
1036 section_address = bfd_get_start_address (pbfd);
1037 else if (strcmp (section_name, ".data") == 0) {
1038 /* Read the first 8 bytes of the data section.
1039 There should be the string 'DaTa' followed by
1040 a word containing the actual section address. */
1041 struct data_marker
1042 {
1043 char signature[4]; /* 'DaTa' */
1044 unsigned char sdata[4]; /* &sdata */
1045 } marker;
1046 bfd_get_section_contents (pbfd, section, &marker, 0,
1047 sizeof (marker));
1048 if (strncmp (marker.signature, "DaTa", 4) == 0)
1049 {
1050 section_address = bfd_getb32 (marker.sdata);
1051 }
1052 }
1053 }
1054
1055 section_size = bfd_section_size (section);
1056
1057 if (sis_verbose)
1058 printf("\nsection %s at 0x%08" PRIx64 " (0x%lx bytes)",
1059 section_name, (uint64_t) section_address, section_size);
1060
1061 /* Text, data or lit */
1062 if (bfd_section_flags (section) & SEC_LOAD) {
1063 file_ptr fptr;
1064
1065 fptr = 0;
1066
1067 while (section_size > 0) {
1068 char buffer[1024];
1069 int count;
1070
1071 count = min(section_size, 1024);
1072
1073 bfd_get_section_contents(pbfd, section, buffer, fptr, count);
1074
1075 for (i = 0; i < count; i++)
1076 sis_memory_write ((section_address + i) ^ EBT, &buffer[i], 1);
1077
1078 section_address += count;
1079 fptr += count;
1080 section_size -= count;
1081 }
1082 } else /* BSS */
1083 if (sis_verbose)
1084 printf("(not loaded)");
1085 }
1086 }
1087 if (sis_verbose)
1088 printf("\n");
1089
1090 return bfd_get_start_address (pbfd);
1091 }
1092
get_time(void)1093 double get_time (void)
1094 {
1095 double usec;
1096
1097 struct timeval tm;
1098
1099 gettimeofday (&tm, NULL);
1100 usec = ((double) tm.tv_sec) * 1E6 + ((double) tm.tv_usec);
1101 return usec / 1E6;
1102 }
1103